Preterm labor and birth. March of Dimes website. Available at:
http://www.marchofdimes.com/pregnancy/preterm%5Findepth.html. Updated September 2012. Accessed April 23, 2013.

Preterm labor. The American College of Obstetricians and Gynecologists website. Available at:
http://www.acog.org/~/media/For%20Patients/faq087.pdf?dmc=1&ts=20130423T0923201528. Accessed April 23, 2013.

What treatments are used to prevent preterm labor and birth? National Institute of Child Health & Human Development website. Available at:
http://www.nichd.nih.gov/health/topics/preterm/conditioninfo/Pages/treatments.aspx. Updated November 30, 2012. Accessed April 23, 2013.

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.